[Refractive errors: analysis of 2,651 cases (author's transl)].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000145:classification / Q000453:epidemiology* / Q000628:therapy